Photon Coalescence in a Lossy Non-Hermitian Beam Splitter

• 作者: J.F.Chen Rong Wen Zhiqiang Ren
• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2020,（8）
• 所属期刊栏目: FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS)
• 页码范围: 53-56
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/37/8/084203

摘要

We investigate photon coalescence in a lossy non-Hermitian system and study a dynamic device modeled by a beam splitter with an extra intrinsic phase term added in the transformation matrix,with which the device is a lossy non-Hermitian linear system.The two-photon interference behavior is altered accordingly since this extra intrinsic phase affects the unitary of transformation and the coalescence of the incoming photons.We calculate the coincidence between two single-photon pulses,considering the interferometric phase between two pulses and the extra intrinsic phase as the tunable parameters.The extra phase turns the famous Hong-Ou-Mandel dip into a bump,with the visibility dependent on both the interferometric phase and the extra phase.